Process of producing ophthalmic mountings



May 20, 1924. 1,494,528

H. P. RAVENELLE PROCESS OF PRODUCING OPHTHALMIC MOUNTINGS Filed March 5'9 1922 y I OR l/L'AMf 6/110 PRAVfNHLE Y ATTORNEYS Patented May 20, 1924.

-mrao1 v 1,494,628: PR-TENT orrics.

men wear P. RAvEnnLL-E', or sou'rHBrttneE-f: Mn'ssnonusnm'rs; Assisi-Non re P AMERICAN OPTICAL" COMPANY; FSOUTHBIHISGEQ MASSACHUSETTS, A V0LUN4 TARY Asso oIA'rIoiv'oFMAssAoHnsETrs. I I

rnocnssor Pnonuomeorfi rrmnmio nterim-rites Application m s March's, 1m. seiiarntls ia ital To all wkom it may conceflt;

Be it known that I, Hn-myrnr neiniiPl.

vnivnLLn, a citizen of the United states residing at Southbridge, in thecounty of l/Vorcester and State of Massachusetts have invented certain new and useful improve- 1 merits in Processes of Producing Ophthalmic:v Mountings, of which thefollowing is a1 p oplithal'mid fraspecification.

process of. producing ophthalmic mountings, and has particular; referenceto such mount ings which are constructed vofa combina tion of metallic and'non-metallic materials:

One of'the, principal objects of the'present invention is the provision of a novel process of construction of mounting" in which the two parts may be satisfac torily united without the I use of supplemental fastening devices, and in which the inherent resilency of the non-metallicmaterial will serve to retain it in place.

A further object of the present invention is the provision of a process of construction of this type in which either plain colored of mottled material may be employed, as desired, in place of its being possible to construct the mountings only from plain colored material as has been the case in the ast.

P Other objects and advantages of my improved process should be readily apparent by reference to the following description taken in connection with the accompanying drawings, and it will be seen thatI may make any modifications in the specific details of construction shown and described within the scope of the appended claims without departing from or exceeding the spirit of my invention.

Figure I is a perspective view of the blank from which a rim member, or the like, is to be formed.

Figure II illustrates one step in the formation thereof.

This invention relates to improvements in Figure VII is a sem'i dia 'rammatic view.

illustrating, the curling :o the prepared stbkiltf.

I view, of the stock: at the empi n" 'off' this" operation.-

enclosing non-metallicportion. In the case of frames having I but a thin separate covering. I I been] constructedf either by bending up the none tallici"material from sheet form or, byffsplittingifanextrudedtubel In the one case the inherent tendency of the material,

isl to}.lstiiaiglitenpiit and become loosened Whilhl'i tlie'otlfi' case it has been "im o's stock taking a blank as shown in Figure I, this being formed from the composition material 1 and being of round, square or other cross section, as desired. I then proceed to workup the blank as through the use of the cutter 2 forming the central groove or channel 3 with the adjacent bevel edges 4, as is clearly illustrated in Figure II. The stock having been thus formed I make use of the supplemental cutter 5 having the neck 6 fitting into the upper portion of the groove 3, the cutter 5 serving to enlarge the groove 3 into the circular shape as indicated at 7 The blank will then be found to have the substantially feathered edges at the point 8 and to be otherwise of generally uniform thickness and strength having any desired markings, and of the proper strength, coherence, and tlle'like, to produce most satisfactory results. The same having been grooved, I then pass it between the rollers 9 and 10, the roller 10" engaging the bevel portion 4 and crimping the same somewhat inward, thus lessening the diameterof the stock at thatside so that it comes out in the substantially era ram was that; a H p s hfavebeen'constructed having annrmr' metallic portion" and an I no metallic"material they have, i

e illustrated.

spirally curved member shown in Figure VIII. The rolls 9'and 10 are so designed that this spiral will be slightly smaller than the normal diameter of the metal lens receiving frame 11 so that when the'member l is sprung therearound, as indicated in Figures IV and IX, it will firmly remain in place held by its inherent resiliency, and

there will be no tendency of the same to become disengaged through theaction of heat or other influence.

' I'claim:' i

*1; The roce'ss of forming a non-metallic covering for a metal. frame, consistingzin primarily producing alcompositi'on member.

2. The process of'forming a non-metallic covering for a metal frame, consisting in primarily producing a composition member in barfo-rm, longitudinally slotting said bar, bevelling thewalls of the slot, subsequently interiorly milling the Walls of the slot toproduce a member of substantially split tubular form, and rolling the material after milling whereby the slotted side will be compressed to cause the member to assume a'curled form.

3. The process offorming anon-metallic "the slot to produce a member of substantially split tubular form, rolling the material after millingwhereby the slotted side will be compressed "to cause the member to assume a curled form', and snapping the curled member over a metal frame.

4. The process of forming a composition covering' for a metal frame, consisting in slotting 'a bar of composition material with a cutting member-having'a slot formingportion and an edge bevellin'g portion, and subsequently removing portions of'the walls of the slot through the use of a ball endmill, substantially as illustrated.

In testimony whereof I have aflixed' my signature, in presence of; two witnesses.

HERMENEGILD P. RAVENELLE.

Witnesses: V

SUSAN CASAZZA, I ESTHER M. LAFLER. 

